* Earth's crust: This varies greatly depending on location. Oceanic crust is about 3-6 miles thick, while continental crust can be 20-30 miles thick.
* Pizza crust: This can vary depending on the type and recipe, but typically ranges from 1/4 inch to 1/2 inch.
* Pie crust: This is usually about 1/8 inch thick.
Could you please clarify what type of crust you are asking about?
